Term ends Mar 27, 2027 · High confidence
20-year base term ends Mar 27, 2027
Held by Amazon Technologies, Inc.
Filed Sep 13, 2011 as application 13/231,822 · Granted Apr 9, 2013
Base term, 20 years from filing
Today
2007
2027
Clock starts
Mar 27, 2007
Mar 27, 2007
Term ends
Mar 27, 2027
Mar 27, 2027
Granted
Apr 9, 2013
Apr 9, 2013
base term
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
50
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Mar 27, 2007, when application 11/692,075, the earliest non-provisional in its chain, was filed (this one was filed Sep 13, 2011) | Mar 27, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 27, 2027 | High confidence |
This family
| US 8,203,445 | In force Sep 2029 | Sep 2029 |
| US 8,669,716 | Lapsed on the fee record Mar 2022 | Mar 2022 |
| US 8,033,686 | Lapsed on the fee record Oct 2023 | Oct 2023 |
| US 8,362,713 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 8,491,159 | In force Mar 2028 | Mar 2028 |
| US 8,519,566 | Lapsed on the fee record Aug 2021 | Aug 2021 |
| US 8,829,799 | Lapsed on the fee record Sep 2022 | Sep 2022 |
| US 8,415,901 | this patent Mar 2027 | Mar 2027 |
8 of 50 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Apr 10, 2017 Reel 42227, frame 832 | Wireless Environment, LLC | Citizens Bank, N. A. | Security Agreement |
| Oct 10, 2017 Reel 44166, frame 789 | Citizens Bank National Association, Secured Party | Wireless Environment, LLC | Termination and Release of Security Interest in Patents at Reel/Frame 042227/0832 |
| Dec 10, 2018 Reel 48695, frame 493 | Ring LLC | A9 Com, Inc. | Bill of Sale |
| Dec 10, 2018 Reel 48737, frame 379 | Wireless Environment, LLC | Ring LLC | Assignment of Assignor's Interest |
| Oct 7, 2024 Reel 69114, frame 709 | A9.com, Inc. | Amazon Technologies, Inc. | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
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Alerts on its grants, lapses and transfers.
What's changing
Mar 2027
Term ends Mar 27, 2027. No further fees fall due before then
Citations
205
later US patents cite this one
That is top 5% of utility patents granted in 2013 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.